Conveying attachment for paper cutters



June 30, 1936. J. cl PENWELL CONVEYING ATTACHMENT FOR PAPER CUTTERSFiled April 29, 1955 2 Sheets-Sheet 1 INVENTOR', 6

W 4W BYVV'M 0M 44- ATTORNEY 30, 1936. J. c. PENWELL CONVEYING ATTACHMENTFOR PAPER CUTTERS Filed April 29, 1955 2 Sheets-Sheet 2 I INVENTOR 4ATTORNEY Patented June 30, 1936 UNITED STATES PATENT OFFICE CONVEYINGATTACHMENT FOR PAPER CUTTERS Application April 29,

3 Claims.

This invention relates to new and useful improvements in conveyingattachments for paper cutters.

It is one of the principal objects of my invention to provide for papercutters, a conveying attachment that will increase productionsubstantially fifty percent. As against a rate of to linear feet perminute at the present time, my improved conveying attachment will pullthe paper from the roll at the rate of approximately 325 to 330 linearfeet per minute.

On the original machine no provision is made for holding the paper onthe conveying tapes, with the result that when the machine ran fast, thesevered sheets of paper would become misplaced. My invention, therefore,contemplates the provision of hold-down tapes which move in contact withthe original tapes to carry the paper sheets in a properly placed andalined manner, thereby making possible an increased speed and greaterproduction of the machine.

Another object of my invention is to provide a flexible sheet that maybe attached to the cutting cylinder for wiping contact with the paper toassist the feed rolls in presenting it to the cutting blades, and inproperly placing it under the hold-down tapes. If no such means areprovided, the paper will frequentlyfollow the cutting cylinder around toclog up the machine.

Other important and incidental objects will be brought out in thefollowing specification and particularly set forth in the subjoinedclaims.

In the accompanying drawings illustrating my invention, Figure 1 is aside view of a paper outter showing my sheet aligning and conveyingattachments therefor. Figure 2 is a top plan view thereof. Figure 3 is alongitudinal sectional view taken through the rotary cutter mechanism,showing the flexible sheet aliner attached to the cutting cylinder. AndFigure 4 is a longitudinal sectional view taken through the front end ofthe sheet conveying attachment, showing the floating pulley structurefor the sheet engaging tapes.

Referring to the accompanying drawings for a detailed description of myinvention, the numerals I and 2 designate a pair of connected sideframes having raised rear end portions 3, 3 that support cross shafts 4.In this instance there are three of these shafts 4 for supporting threerolls of paper 5.

Projecting upwardly from the raised portions of the side frames I and 2,in front of the paper rolls 5, are oppositely disposed brackets 6, 6 forsupporting shafts 'I and 8 upon which co-acting 1935, Serial No. 18,942(01. 164--68) feed rollers 9 and III are respectively mounted. Thesefeed rollers receive between them the leading ends of the paper from therolls 5, and present this paper to a cutting cylinder 1 I.

The cylinder II is mounted on a shaft I2 supported by the front ends ofthe raised portions 3 of the side frames I and 2. The cylinder IIcarries a cutting blade I3 that is adapted to pass a fixed blade I4secured to the brackets 6, 6, to shear the paper from the rolls 5 whenthe shaft I2 carrying the cylinder is rotated. Securedto the outer endof the shaft I2 is a pulley I5 that is driven by a belt on the maindrive pulley not shown.

At their front ends the side frames I and 2 have forwardly extendingarms I6 to support a sheet receiving table II. Mounted in the forwardends of the side frames I and 2, immediately behind, and just above, thetable I1, is a shaft I8 upon which a series of pulleys I9 are fixedlymounted. Projecting downwardly from the top portions of the side framesI and 2, a short distance behind the pulleys I9, .are brackets 20, 20which carry a shaft 2| upon which a series of idler pulleys 22 aremounted. Supported between the rear ends of the side frames I and 2,behind and below the cutting cylinder II, is a shaft 22 upon which aseries of pulleys 23 are mounted.

The pulleys I9, 22 and 23 are arranged to substantially the samevertical planes to receive endless conveying tapes 24. The upper runs ofthese tapes travel from pulleys 23 behind the cutter cylinder I I, overthe top of the side frames I and 2, to the pulleys I9, to deliver thesevered sheets from said cylinder to the table II.

In order to firmly hold the severed sheets of paper on the tapes 24while they travel from the cutting cylinder to. the table I1, I haveprovided flexible hold-down means such as endless tapes 25. These tapes25 are so mounted upon the following pulleys that their lower runs moveforwardly with the upper runs of the tapes 24 to hold the severed papersheets firmly upon the lower tapes, thus preventing a misplacement of Isaid sheets upon the latter tapes when the machine is run fast.

Projecting upwardly from the side frames I and 2, in substantialalinement with the bracket arms 20, 20, are bracket arms 26, 26.Supported by the latter bracket arms is a transverse shaft 21 upon whichthere is mounted a series of pulleys 28 over which the tapes 25 pass. Atthe rear of the machine these tapes pass over a drum 29 mounted on ashaft 30 supported by vertical brackets 3| secured to the side frames land 2 immediately in front of the cylinder H. The drum 29 is disposed ata height which permits the lower runs of the tapes 25 to bear upon thesevered sheets with sufficient force to hold them tight upon the lowertapes 24 during their forward travel between said tapes.

Immediately above the pulleys l9, floating pulleys 32 are mounted onstub shafts 33 carried by the forward ends of arms 34 which arepivotally attached at their rear ends to the shaft 21. (See Figures 1, 2and 4.) Over these pulleys 32 and the pulleys 28 short endless drivebelts 35 pass.

Over the drive belts 35, and in contact therewith, the tapes 25 travelat the front end of the,

machine in order that they may be driven by the shaft 21. This shaft isin turn rotated by a belt 36 which passes over a pulley 31 fast on thatshaft and a pulley 38 secured to the drive shaft l2.

The tapes 24 are driven in unison with the tapes 25' by the shaft 18,which is rotated by a crossed belt 39 that passes around a pulley 40fast on said shaft and a pulley 4| secured to the shaft 21. While I haveshown these means for driving the endless tapes 24 and 25 so that theirpaper gripping runs will move together at the same rate of speed, anyother suitable means may be employed for this purpose without departingfrom the spirit of the invention.

For the purpose of holding the tapes 25 firmly against the paper sheetstraveling forwardly on the tapes 24 between the pulleys 28 and 32, Isecure to a cross member 42 supported by the bracket arms 26, 26 abovethe pulleys 28, holddown members 43. These springs engage the arms 34which carry the pulleys 32, to press the tapes 25 which pass aroundthem, firmly against the severed paper sheets on the conveying tapes 24.V

For the purpose of assisting the feed rolls 9 and ID in feeding theleading end of the paper between the cutting blades l3 and I4, and inproperly placing the severed sheets between the tapes 24 and 25, Iprovide the following means. Secured between bracket arms 45 carried bythe blade supporting projection 46 on the cylinder II, is a rod 41 overwhich a flexible sheet 48, in this instance paper, is looped. Thisflexible sheet 48 has a trailing end that nearly reaches the blade I3 onthe other side of the cylinder.

When the cylinder II is rotated, the sheet 48 will follow the blade l3,to engage the paper being fed between that blade and the fixed blade l4,to assist the feed rolls 9 and E6 in drawing the leading end of thepaper forward for the cutting operation. The wiping engagement of thisflexible sheet 48 with the paper also prevents it from being drawnaround the cylinder H by electric attraction to clog up and slow downthe machine. It further aids in properly placing this paper between thetapes 24 and 25 which convey it in an orderly manner to the table l1without danger of misplacement. The speed of the machine can thus beincreased to insure faster and more economical production.

Having described my invention, I claim:

1. In a device of the type described, a roll of paper, a rotary cutter,feed rolls between the paper roll and the rotary cutter to feed paper tothe latter, a cutting blade carried by said cutter, and a flexible sheetsecured to said cutter behind the blade for wiping contact with thepaper when the cutter is rotated, to assist the feed rolls in drawingthe paper to the cutter from the paper roll.

2. In a device of the type described, a roll of paper, a rotarycylinder, feed rolls between the paper roll and the cylinder to feedpaper to the latter, a cutting blade carried by said cylinder, and abowed fibrous sheet secured at one end to said cylinder behind thecutting blade for wiping contact with the paper when the cylinder isrotated, to assist the feed rolls in drawing the paper to the cutterfrom the paper roll.

I 3. In a device of the type described, a roll of paper, a fixed cuttingblade in front of said roll of paper, a rotary cylinder in front of saidfixed blade, at cutting blade carried by said cylinder for co-actionwith the fixed blade to sever sheets from said paper roll, a conveyor infront of said cylinder, and a bowed flexible sheet secured at one end tosaid cylinder behind the blade carried thereby, for wiping contact withthe paper, when the cylinder is rotated, to prevent it from adheringto'the cylinder and to assist in placing the severed sheets in anorderly manner upon the conveyor.

JESSIE CLARENCE PENWELL.

